Tribromotoluquinone Induced Modifications of the Oscillation Pattern of Oxygen Evolution and of Herbicide Binding in Thylakoids and PS II Membrane Fragments from Spinach. Renger, G., Messinger, J., & Fromme, R. Zeitschrift für Naturforschung C, 44(5-6):423–430, June, 1989. Publisher: De Gruyter![Tribromotoluquinone Induced Modifications of the Oscillation Pattern of Oxygen Evolution and of Herbicide Binding in Thylakoids and PS II Membrane Fragments from Spinach [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex In the present study the effect of TBTQ on PS II and its mutual interaction with DCMU was analyzed by measurements of the oxygen yield oscillation pattern and of DCMU binding. It was found: 1)TBTQ in its reduced form is able to induce the reduction of D ox which gives rise to an accelerated decay of S 2 and S 3 of the wateroxidizing complex. 2) Triton X-100 treatment used for isolation of PS II membrane fragments does not significantly affect the lateral mobility of p lastoquinone within the membrane. TBTQ bound to the thylakoid membrane does not enhance the electron pool capacity in PS II membrane fragments. 3) Preincubation of thylakoids with TBTQ diminishes the blockage of O2-evolution by DCMU significantly. In correspondence with previous findings [18, 19] the effect strongly depends on the order of addition of TBTQ and DCMU . 4) Excitation with a single saturating flash causes enhanced DCMU binding in TBTQ pretreated samples leading to the inhibition of flash induced oxygen evolution. The rate of the latter process depends on the DCMU concentration. 5) In thylakoids pretreated in the d ark with TBTQ the oxygen yield of the 3rd flash slowly declines as a function o f dark incubation time at constant DCMU concentration. Based on the above mentioned findings it is inferred that a mutual interaction between TBTQ and DCMU takes place at the PS II acceptor side. Two alternative mechanisms are discussed: i) TBTQ tightly (covalently?) bound at the Q B -site (or very close to it) is modified in its function by DCMU via structural effects (allosteric type), or ii) there occurs a TBTQ /DCMU exchange that is fast in the light and slow in the dark.
@article{renger_tribromotoluquinone_1989,
title = {Tribromotoluquinone {Induced} {Modifications} of the {Oscillation} {Pattern} of {Oxygen} {Evolution} and of {Herbicide} {Binding} in {Thylakoids} and {PS} {II} {Membrane} {Fragments} from {Spinach}},
volume = {44},
copyright = {De Gruyter expressly reserves the right to use all content for commercial text and data mining within the meaning of Section 44b of the German Copyright Act.},
issn = {1865-7125},
url = {https://www.degruyter.com/document/doi/10.1515/znc-1989-5-614/html},
doi = {10.1515/znc-1989-5-614},
abstract = {In the present study the effect of TBTQ on PS II and its mutual interaction with DCMU was analyzed by measurements of the oxygen yield oscillation pattern and of DCMU binding. It was found: 1)TBTQ in its reduced form is able to induce the reduction of D ox which gives rise to an accelerated decay of S 2 and S 3 of the wateroxidizing complex. 2) Triton X-100 treatment used for isolation of PS II membrane fragments does not significantly affect the lateral mobility of p lastoquinone within the membrane. TBTQ bound to the thylakoid membrane does not enhance the electron pool capacity in PS II membrane fragments. 3) Preincubation of thylakoids with TBTQ diminishes the blockage of O2-evolution by DCMU significantly. In correspondence with previous findings [18, 19] the effect strongly depends on the order of addition of TBTQ and DCMU . 4) Excitation with a single saturating flash causes enhanced DCMU binding in TBTQ pretreated samples leading to the inhibition of flash induced oxygen evolution. The rate of the latter process depends on the DCMU concentration. 5) In thylakoids pretreated in the d ark with TBTQ the oxygen yield of the 3rd flash slowly declines as a function o f dark incubation time at constant DCMU concentration. Based on the above mentioned findings it is inferred that a mutual interaction between TBTQ and DCMU takes place at the PS II acceptor side. Two alternative mechanisms are discussed: i) TBTQ tightly (covalently?) bound at the Q B -site (or very close to it) is modified in its function by DCMU via structural effects (allosteric type), or ii) there occurs a TBTQ /DCMU exchange that is fast in the light and slow in the dark.},
language = {en},
number = {5-6},
urldate = {2024-11-25},
journal = {Zeitschrift für Naturforschung C},
author = {Renger, G. and Messinger, J. and Fromme, R.},
month = jun,
year = {1989},
note = {Publisher: De Gruyter},
keywords = {Binding Sites, Halogenated p-B enzoquinones, Oxygen Yield Oscillation, Photosystem II, Quinone/Herbicide Interaction},
pages = {423--430},
}
Downloads: 0
{"_id":"aHcJkkD9K6c47dqsn","bibbaseid":"renger-messinger-fromme-tribromotoluquinoneinducedmodificationsoftheoscillationpatternofoxygenevolutionandofherbicidebindinginthylakoidsandpsiimembranefragmentsfromspinach-1989","author_short":["Renger, G.","Messinger, J.","Fromme, R."],"bibdata":{"bibtype":"article","type":"article","title":"Tribromotoluquinone Induced Modifications of the Oscillation Pattern of Oxygen Evolution and of Herbicide Binding in Thylakoids and PS II Membrane Fragments from Spinach","volume":"44","copyright":"De Gruyter expressly reserves the right to use all content for commercial text and data mining within the meaning of Section 44b of the German Copyright Act.","issn":"1865-7125","url":"https://www.degruyter.com/document/doi/10.1515/znc-1989-5-614/html","doi":"10.1515/znc-1989-5-614","abstract":"In the present study the effect of TBTQ on PS II and its mutual interaction with DCMU was analyzed by measurements of the oxygen yield oscillation pattern and of DCMU binding. It was found: 1)TBTQ in its reduced form is able to induce the reduction of D ox which gives rise to an accelerated decay of S 2 and S 3 of the wateroxidizing complex. 2) Triton X-100 treatment used for isolation of PS II membrane fragments does not significantly affect the lateral mobility of p lastoquinone within the membrane. TBTQ bound to the thylakoid membrane does not enhance the electron pool capacity in PS II membrane fragments. 3) Preincubation of thylakoids with TBTQ diminishes the blockage of O2-evolution by DCMU significantly. In correspondence with previous findings [18, 19] the effect strongly depends on the order of addition of TBTQ and DCMU . 4) Excitation with a single saturating flash causes enhanced DCMU binding in TBTQ pretreated samples leading to the inhibition of flash induced oxygen evolution. The rate of the latter process depends on the DCMU concentration. 5) In thylakoids pretreated in the d ark with TBTQ the oxygen yield of the 3rd flash slowly declines as a function o f dark incubation time at constant DCMU concentration. Based on the above mentioned findings it is inferred that a mutual interaction between TBTQ and DCMU takes place at the PS II acceptor side. Two alternative mechanisms are discussed: i) TBTQ tightly (covalently?) bound at the Q B -site (or very close to it) is modified in its function by DCMU via structural effects (allosteric type), or ii) there occurs a TBTQ /DCMU exchange that is fast in the light and slow in the dark.","language":"en","number":"5-6","urldate":"2024-11-25","journal":"Zeitschrift für Naturforschung C","author":[{"propositions":[],"lastnames":["Renger"],"firstnames":["G."],"suffixes":[]},{"propositions":[],"lastnames":["Messinger"],"firstnames":["J."],"suffixes":[]},{"propositions":[],"lastnames":["Fromme"],"firstnames":["R."],"suffixes":[]}],"month":"June","year":"1989","note":"Publisher: De Gruyter","keywords":"Binding Sites, Halogenated p-B enzoquinones, Oxygen Yield Oscillation, Photosystem II, Quinone/Herbicide Interaction","pages":"423–430","bibtex":"@article{renger_tribromotoluquinone_1989,\n\ttitle = {Tribromotoluquinone {Induced} {Modifications} of the {Oscillation} {Pattern} of {Oxygen} {Evolution} and of {Herbicide} {Binding} in {Thylakoids} and {PS} {II} {Membrane} {Fragments} from {Spinach}},\n\tvolume = {44},\n\tcopyright = {De Gruyter expressly reserves the right to use all content for commercial text and data mining within the meaning of Section 44b of the German Copyright Act.},\n\tissn = {1865-7125},\n\turl = {https://www.degruyter.com/document/doi/10.1515/znc-1989-5-614/html},\n\tdoi = {10.1515/znc-1989-5-614},\n\tabstract = {In the present study the effect of TBTQ on PS II and its mutual interaction with DCMU was analyzed by measurements of the oxygen yield oscillation pattern and of DCMU binding. It was found: 1)TBTQ in its reduced form is able to induce the reduction of D ox which gives rise to an accelerated decay of S 2 and S 3 of the wateroxidizing complex. 2) Triton X-100 treatment used for isolation of PS II membrane fragments does not significantly affect the lateral mobility of p lastoquinone within the membrane. TBTQ bound to the thylakoid membrane does not enhance the electron pool capacity in PS II membrane fragments. 3) Preincubation of thylakoids with TBTQ diminishes the blockage of O2-evolution by DCMU significantly. In correspondence with previous findings [18, 19] the effect strongly depends on the order of addition of TBTQ and DCMU . 4) Excitation with a single saturating flash causes enhanced DCMU binding in TBTQ pretreated samples leading to the inhibition of flash induced oxygen evolution. The rate of the latter process depends on the DCMU concentration. 5) In thylakoids pretreated in the d ark with TBTQ the oxygen yield of the 3rd flash slowly declines as a function o f dark incubation time at constant DCMU concentration. Based on the above mentioned findings it is inferred that a mutual interaction between TBTQ and DCMU takes place at the PS II acceptor side. Two alternative mechanisms are discussed: i) TBTQ tightly (covalently?) bound at the Q B -site (or very close to it) is modified in its function by DCMU via structural effects (allosteric type), or ii) there occurs a TBTQ /DCMU exchange that is fast in the light and slow in the dark.},\n\tlanguage = {en},\n\tnumber = {5-6},\n\turldate = {2024-11-25},\n\tjournal = {Zeitschrift für Naturforschung C},\n\tauthor = {Renger, G. and Messinger, J. and Fromme, R.},\n\tmonth = jun,\n\tyear = {1989},\n\tnote = {Publisher: De Gruyter},\n\tkeywords = {Binding Sites, Halogenated p-B enzoquinones, Oxygen Yield Oscillation, Photosystem II, Quinone/Herbicide Interaction},\n\tpages = {423--430},\n}\n\n\n\n","author_short":["Renger, G.","Messinger, J.","Fromme, R."],"key":"renger_tribromotoluquinone_1989","id":"renger_tribromotoluquinone_1989","bibbaseid":"renger-messinger-fromme-tribromotoluquinoneinducedmodificationsoftheoscillationpatternofoxygenevolutionandofherbicidebindinginthylakoidsandpsiimembranefragmentsfromspinach-1989","role":"author","urls":{"Paper":"https://www.degruyter.com/document/doi/10.1515/znc-1989-5-614/html"},"keyword":["Binding Sites","Halogenated p-B enzoquinones","Oxygen Yield Oscillation","Photosystem II","Quinone/Herbicide Interaction"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/upscpub","dataSources":["9cGcv2t8pRzC92kzs"],"keywords":["binding sites","halogenated p-b enzoquinones","oxygen yield oscillation","photosystem ii","quinone/herbicide interaction"],"search_terms":["tribromotoluquinone","induced","modifications","oscillation","pattern","oxygen","evolution","herbicide","binding","thylakoids","membrane","fragments","spinach","renger","messinger","fromme"],"title":"Tribromotoluquinone Induced Modifications of the Oscillation Pattern of Oxygen Evolution and of Herbicide Binding in Thylakoids and PS II Membrane Fragments from Spinach","year":1989}